Sole-edge-trimming machine



No. 625,068. Patented May I6, |899. C.A. SGUIRE.

l SOLE EDGE TRIMMING MACHINE.

(Application led Nov. 4,1898.)

. mveniov @tardes A quipe) r his AHOY@ Nrrnn STATES PATENT GFFICE.

CHARLES A. SQUIRE, OF HAVERHILL, MASSACHUSETTS.

soLE-l-:DoE-TRIMMING MACHINE.

SPECIFICATION forming part of Letters Patent No. 625,068, dated May 16, 1899. Application filed November 4, 1898. Serial No. 695,492. (No model.)

To all whom t may concern:

Be it known that I, CHARLES A. SQUIRE, a

of Massachusetts, have invented certain new anduseful Improvements in Sole-Trimming Machines, of which the following is a speciiication.

In trimming the soles of shoes with the ordinary edge-trimming cutter a feather-edge will be left on the bottom of the sole,"and unless some means is provided for removing this feather-edge the shoe will present an unfinished appearance.

This invention relates to that portion of a sole-trimming machine the function of which is to trim the feather-edge left by the-edgee trimming cutter above referred to.

The feather-edge trimmers now in most common use consist of a spring-pressed sleeve which is adapted to slide freely along the shaft, said sleeve having secured thereto a series of blades, so that the sleevewith its blades, will rotate with the cutter. The spring for pressing the blades of the sleeve against the sole is usually arranged between said sleeve and a shoulder on the shaft. Featheredge trimmersof this character are open to numerous objections, which I have overcome with my improvement, as will hereinafter appear.

According to my invention vI provide a sleeve or holder which is securedto the shaft at any desired position with respect to the cutter and which is provided with a series of feather-edge-removing or buffer blades, each of which is independently movable with respect to the sleeve and each of which is pressed by a separate spring.

I will now describe my invention in connection with the accompanying drawings, in whichv Y Figure l is a cross-section on the line 'a a Fig. 2

is a side elevation of the sleeve. Fig. Slis a cross-section on the line b b of Fig. 4. Fig. y

4 is a side elevation of the sleeve with the outer casing removed. Fig. 5 is a cross-section on the line c cof Fig. 2. Fig. Gis a crosssection on the line d cl of Fig. 1. Fig. 7 is a rear end elevation of the sleeve.

1 is the cutter of any well-known form,which is secured to the shaft 2 between a shoulder on said shaft and the guard 3 by means of the screw 4 in the usual manner.

5 is the holder, which is secured to the shaft i by means of the set-screw 6. This holder consists of an outer shell or ring 7 and an inner sleeve 8, which forms the main body of the device. The sleeve 8 Iis provided with longitudinal inclined grooves 9, which extend the entire length. The feather-edge blades 10 are arranged to fit nicely and slide freely in said inclined grooves, said grooves being made substantially the same depth as the width of the blades, so that the outer edges of the blades come just to the surface of the sleeve` 8 and do not project above it. Thus when the ring 7 is in place the blades will be held against any radial motion by the ring 7 and against any lateral motion by the sides of the grooves 9. The blades therefore are capable only of a longitudinal motion With respect to the sleeve. The sleeve 8 is provided with an annular groove 11, which ex-l tends around the same. A wire 12 is located in said groove, and the ends of said wire terminate on opposite sides ofa pin 13, which prevents the wires working around on the wardly the inner sides of the notches 14 will be pressed up against the wire 12. These springs bear at their opposite ends against the cap 16, which is secured to the inner portion 8 by screws 17. Holes 18 are bored through the grooves 9 to the shaft-bore in nearly the same plane as the grooves 11 for the wire, so that in case any of the dust from the leather chips works into the `groovesand notches 14 of the blades it will not clog or obstruct the movement of the blades, but will Work into these holes 18 and will fallout when the cutter is taken from the shaft.

The ring 7 is secured to the sleeve S by IOO means of screws 19 and is provided at its cnd next the blades with a beveled portion 20. The object of this beveled edge is to enable the operator while trimming the soles ofshoes which have the heels on to trim the shank of` of the sole to be trimmed. The holder is then adjusted on the shaft, so that the blades project in between the cutter-blades, as shown. The holder is then clamped on the shaft in this position by means of the set-screw 6 and the machine is ready for use.

the springs l5.

edge will be removed by them.

the sole as the shoe is fed along.

spring-pressed sleeve are as follows:

My device will give equally good results, i

whether used to trim a thin sole or a thick sole-that is, the sleeve may be adjusted on: the shaft so that its blades will project loe--` tween the cutter-blades for the same distance, f whether a wide or narrow cutter is used. The

feather-edge blades will thus bear against the sole vwith the same force whatever the thick- On the contrary, in trimming a very thin sole with a feather-edge trimmer, the blades of which are all fixed to ness of the sole.

aspring-pressed sleeve, the sleeve is pressed edge.

edge blades are usually attached to the sleeve by soldering them at their inner and outer edges to the .body of the sleeve and to an en* circling ring, the sleeve being provided with shallow grooves in which the inner edges of the blades rest. These blades are constantly becoming loose, so that they have to be resoldered. Thisis a disadvantage not present in my invention. Moreover, it has not been expedient to have these blades project to any extent beyond the front of the sleeve, so that with such a device it is not possible to trim The edge of the sole is trimmed by the cutter in the usual y way, and the beveled edges ot' blades l0 are pressed against the bottom of the sole by- Although the pressure of the blades against the sole is com paratively slight, the shaft rotates so rapidly that the feather- As each blade l comes into contact with the sole it will bei pressed back as-it passes by, and the extent to which it will be pressed back will be va`y `ried according to the varying thickness of1 the shank of the shoe close to the heel when the heel is on the shoe on account of the projee-ting holding-ring and short blades. To finish the trimming operation, it is necessary to use a shank-cutter. Vith my device, however, I can have the blades project as far beyond the sleeve as is necessary, and this, together 4with the fact that the front end of the sleeve is beveled, enables me to trim the shank to the heel, whether the heel is on or not, making the use of a separate cutter unnecessary. Where two separate cutters are used, it is difficult to prevent a mark being left on the edge of the sole where the chip from the sole-trimmer ends and that from the shank-trimmer begins, so that with my device a much better finish. is given to the edge of the sole and the work may be performed much more rapidly.

In using sleeves similar to those before referred `to considerable delay is caused from the chips packing in between the blades, so that it is necessary to remove the sleeve at intervals to clean out these chips. With my device, however, the constant in-and-out motion of the individual blades overcomes all tendency of the chips to clog in between them. Further, there is little chance for clogging on I account of the fact that there are no crevices Some of the advantages possessed by thisi construction over the class of trimming de' vices in which the blades are fixed on the 14,

` than a sleeve which is loose on the shaft.

in which the chips may lodge in any number. As my sleeve is fixed on the shaft, it will run more smoothly and with less vibration When it is desired to take off the cutter to grind it, it is not necessary to remove my sleeve also, as itis secured to the shaft, whereas a loose sleeve must be removed when the cutter is taken off to be ground, there being nothing to hold it in place. It will be understood in this connection that the grinder is usually driven by a belt on the cutter-shaft.

A further objection to the old form of sliding sleeve is that the leather chips will clog in between the shaft and sleeve, thus interfering with the free longitudinal motion of the latter, and as the spring :is subject to such wide variations in tension it soon loses its resistance, so that a new spring must be supplied. With my device the springs are never subjected to excessive strain, and if one becomes broken a new one may readily be supplied by removing the cap.

Although I have shown and described what I consider the best form of my invention, I consider any feather-edge-'trimming sleeve in which the blades are independently movable within the scope of my invention.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows:

l. A rotary trimmer consisting of a holder having independently-movable blades which reciprocate independently of each other.

2. A rotary trimmer consisting of a holder provided with independently-movable springa pressed blades.

3. A rotary trimmer consisting of a holder IOO IIO

having independently-movable blades and a separate spring acting on each blade to press the same against the Work.

4. A feather-edge trimmer for sole-trimming machines consisting ofA a sleeve having longitudinal grooves therein, blades arranged to slide in said grooves, and springs acting on said blades for pressing the same against the Work.

5. A feather-edge trimmer of the' class described consisting of a sleeve having longitudinal grooves cut into the surface thereof, blades adapted to slide in said grooves, chambers containing springs in the rear of said blades, said springs being adapted to press i said blades against the Work.

G. A feather-edge trimmer of the class described consisting of a sleeve having longitudinal grooves cut into the surface thereof,

independently-movable spring-pressed blades v adapted to slide therein, an annular groove extending around the sleeve, a Wire in said groove,a notch in each of said blades arranged to engage said Wire, said notches being of greater length than the Width of said Wire, Wherebya limited longitudinal movement of said blades is permitted.

'7. A feather-edge trim mer of the class dcscribed, consisting of a sleeve having longitudinal grooves cut into the surface thereof, independently-movable spring-pressed blades adapted to slide therein, an annular groove extending around the sleeve, aWire in said groove, a notch in each of said blades arranged to engage said Wire, said notches being of greater length than the width of said Wire, whereby a limited longitudinal movement of said blades is permitted, and an outer shell adapted to inclose said-sleeve.

8. A feather-edge trim mer eonsistin g of a sleeve having longitudinal grooves in the surface thereof, blades adapted to slide in said grooves, chambers containing springs in the rear of said blades, said .springs being adapted to press said blades against the Work, and an annular cap adapted to close the ends of said chambers and confine the springs therein.

9. A trimmingmachine consisting of a sleeve having longitudinal grooves cut info the outer surface thereof, blades adapted to fit in said grooves, the depth of the grooves and width of the blades being substantially the same, and an exterior' ring adapted to iit over said sleeve, said blades being held radial movement by the bottom of said grooves on one side and said ring on the other, and means forlimiting the longitudinal movement of said blades. I

' 1l. A trimming device consisting of a sleeve having longitudinal'grooves out into the surface thereof, blades adapted to fit in said grooves, an annular groove cnt in the surface of said sleeve, notches in said blades, a Wire arranged in said annular groove and said notches and an outer ring adapted to inolose said groove.

l2. In a rotary edge-trimmer a shaft, a plurality of independent separately-movable buffer-blades, means on the shaft for supportn ing and independently guiding said blades,

and means for yielding] y resisting backward blades, a plurality o f springs mounted in said W'itnesses:

LoUIs H. HARRIMAN, WM. L. BAKER. 

